The glabella (glabella frontalis) is a smooth prominence located above the nasal bones (or nose) and between the superciliary arches (or eyebrow arches). [Anterior view/Lateral view]

The glabella of the frontal bone

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The supraorbital notch or foramen (incisura supraobitalis frontalis; foramen supra-orbitae frontalis) is a notch or small hole located along the superior margin of the orbit. It serves as a passageway for the supraorbital vessels and nerve. [Anterior view]

The zygomatic process (processus zygomaticus frontalis) is an inferior extension of the squamous part of the frontal bone that joins with the frontal process of the zygomatic bone. [Frontal view/Lateral view]